Definition
Critical altitude means the maximum altitude at which, in standard atmosphere, it is possible to maintain, at a specified rotational speed, a specified power or a specified manifold pressure. Unless otherwise stated, the critical altitude is the maximum altitude at which it is possible to maintain, at the maximum continuous rotational speed, one of the following:
Source: 14 CFR § 1.1 (verbatim from the Federal Aviation Regulations).
Where This Term Is Used
- 14 CFR § 91.1101 — § 91.1101 Pilots: Initial, transition, and upgrade ground training.
- 14 CFR § 91.611 — § 91.611 Authorization for ferry flight with one engine inoperative.
2 sections reference this term in their FAR Decoded content.